Which equations Nastran uses in the analysis

[EmreYucel34]

Hello, which mathematical equations does nastranda use when analyzing analysis analysis, or where can I see the equations, can you help me with this issue, thank you for your help and support in advance, good work

[John_Holtz]

Hi @EmreYucel34 

The best reference is the "Autodesk-Inventor-Nastran Solver YYYY User Manual.pdf". It has the equations for many of the analyses. 

1. Go to the Help home page, such as Autodesk Inventor Nastran 2025 Help | Autodesk.
2. Click "Download the Help" link below the bottom right corner of the "splash screen". 
3. Download the Nastran Solver User's Manual.

John